Portable small seawater desalination device

Abstract

The invention relates to the technical field of seawater desalination, and discloses a portable small seawater desalination apparatus, which comprises a high-pressure pump assembly, a reverse osmosis membrane assembly, a pressing handle assembly and an accessory, the pressing handle and a membrane shell of the reverse osmosis membrane assembly are both provided with telescopic devices, the handle can be retracted in a non-use state to reduce the size of the device, and the handle can be lengthened in a use state to obtain larger pressing force and pressing space; the membrane shell handle is connected with the membrane shell through a clamping groove; the membrane shell handle and the round spring piece form a telescopic device which stretches out and draws back synchronously with the pressing handle assembly. A handle and a reverse osmosis membrane assembly membrane shell telescopic function are added in the design of the single-soldier seawater desalination device, the limitation of the pressing force requirement on the length size of the device is broken through, the length of the device is remarkably reduced, the size of the device can be reduced by 25% or above under the same treatment capacity condition, the water yield is guaranteed, meanwhile, the device is miniaturized, and one-hand operation can be achieved; the practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of seawater desalination, and in particular to a portable small-sized seawater desalination device. Background Art

[0002] When surviving or performing tasks in a sea or land environment lacking fresh water, how to obtain sufficient fresh water resources is a key problem. It is not realistic to carry enough drinking water in advance. The amount of fresh water obtained by general means is small and unstable. Although seawater resources are sufficient, they contain excessive salt and elements that make it impossible for us to use seawater directly as a survival resource. Therefore, desalination of seawater becomes the only stable way to obtain water resources. The amount and speed of fresh water acquisition are related to whether the relevant personnel can survive and whether their physical condition is good. Therefore, it is essential to carry a qualified seawater desalination device with you.

[0003] With the rapid development of science and technology, various desalination technologies are also changing with each passing day. Some water-scarce areas have gotten rid of the plight of lack of fresh water resources through desalination technology. However, many desalination equipments rely on traditional energy such as electricity, so the volume cannot be overly miniaturized, and it is impossible to carry too much energy for the use of desalination equipment in the wild, so the use of small push-type desalination devices is a better choice. For example, a "single-soldier portable seawater desalination device" disclosed in a Chinese patent document, with a publication number of CN215886556U, includes a piston assembly, a reverse osmosis membrane assembly, a water intake pipe, a fresh water production pipe and a concentrated water pipe; the piston assembly is fixedly connected to the reverse osmosis membrane assembly; the piston assembly is provided with a handle assembly for driving the piston to reciprocate, and the side of the piston assembly is provided with a water intake inlet and a concentrated water outlet; the piston assembly is covered with a cover; the reverse osmosis membrane assembly is provided with a fresh water outlet lower than the end face of the assembly; the cover is fixedly connected to the reverse osmosis membrane assembly; the water intake pipe and the concentrated water pipe are respectively connected to the piston assembly; the non-connected end of the water intake pipe is provided with a detachable water intake coarse filter head; the fresh water production pipe is connected to the reverse osmosis membrane assembly. However, the pressure requirement required by the device leads to a requirement for the length of the handle, thereby limiting the overall length of the single-soldier seawater desalination device, and the volume of the device cannot be further reduced. Summary of the invention

[0004] In the above-mentioned prior art, the handle length requirement controlled by the required pressing force greatly limits the miniaturization of the seawater desalination device. Therefore, the present invention integrates and improves the above-mentioned technology to provide a portable small seawater desalination device, which breaks through the limitation of the handle length on the overall size of the device, significantly improves the miniaturization of the device, and reduces the required pressing force.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] The present application provides a portable small-sized seawater desalination device, comprising a high-pressure pump assembly, a membrane assembly, a pressing handle assembly and accessories; the pressing handle assembly is bolted to the high-pressure pump mechanism; the high-pressure pump assembly comprises a water inlet check valve assembly, a piston assembly, a seawater inlet, a concentrated water outlet, a reversing valve assembly, a sealing element and a check valve; the pressing handle assembly comprises an inner handle, an outer handle and a telescopic limit mechanism, and is designed with a telescopic device, the handle can be retracted in a non-use state to reduce the volume of the device, and the handle is elongated in a use state to ensure sufficient pressing space and pressing pressure; the membrane assembly comprises a reverse osmosis membrane, a membrane rear end cover, a membrane shell, a membrane shell handle, a fresh water outlet, a water outlet end cover and a circular spring sheet, the membrane shell handle is connected to the membrane shell by a card slot, the membrane shell handle and the circular spring sheet form a telescopic device, and are synchronously telescoped with the pressing handle assembly; the holding surface of the pressing handle assembly is sandblasted to increase friction to prevent relative sliding during use, increase adhesion between the metal surface and the coating, and improve fatigue resistance of the metal.

[0007] Preferably, the inner handle is divided into two symmetrical parts, which are connected by three pairs of bolts and nuts; the outer handle and the inner handle are connected and limited by a circular groove and a telescopic limiting mechanism.

[0008] Preferably, the piston rod of the piston assembly adopts a sealing element to maintain the sealing performance of the high-pressure pump assembly.

[0009] Preferably, the one-way valve core adopts a high-strength and corrosion-resistant ceramic ball.

[0010] Preferably, the inner handle and the outer handle are sleeved and connected to achieve relative sliding of the inner and outer handles. The pressing handle assembly achieves a telescopic function through the relative movement of the inner handle and the outer handle, thereby achieving 36% pressing force assistance and 25% reduction in device volume; the handle can be opened and closed around the axis between 0-60° to ensure sufficient force application space, and each corner is chamfered to ensure a good user experience.

[0011] Preferably, the reverse osmosis membrane is fixedly connected to the rear end cover of the membrane and the water outlet end cover respectively; the rear end cover of the membrane is fixed by a clamp and a clamp positioning hoop, and the membrane shell handle realizes the telescopic function through relative movement with the membrane shell, and is limited by a circular spring sheet; the membrane shell handle is connected to the membrane shell by a card slot, which effectively avoids possible damage to the membrane shell caused by external factors and improves operational practicality; the membrane shell handle and the circular spring sheet form a telescopic device, which is synchronously telescoped with the pressing handle assembly to ensure the convenience of use of the device.

[0012] Preferably, a plurality of fixing clips are provided at the connection between the membrane assembly and the high-pressure pump assembly, and a corresponding fixing slot is provided on the high-pressure pump assembly; the membrane assembly and the high-pressure pump assembly are fixedly connected by a plurality of screws.

[0013] As a preference, the distance between the piston rod and the fulcrum is K, and the length of the handle before and after the extension is L 缩 and L 伸 , the distance between the handle force midpoint and the fulcrum is L. Based on the actual usage scenario and ergonomics, if L is designed 缩 =0.115 mm, L 伸 =0.155 mm, the theoretical pressing force is, the pressing force can be transmitted to the pressure T on the piston, and the water inlet pressure can be increased by about 36% after extension.

[0014] Preferably, the telescopic limiting mechanism utilizes the connection between the marbles on both sides and the inner and outer handles to provide limiting of the telescopic device in the contracted state and the extended state.

[0015] Preferably, the inner and outer handles have a simple structure, a low probability of problems occurring, an optimized user experience, and reduced difficulty in processing and installing the handle assembly.

[0016] Preferably, the accessories include a silicone hose, a filter head and a strap. The filter head uses nylon as the main material, and the filter screen uses a 200-mesh nylon filter screen, which has good corrosion resistance. At the same time, an outer cover is installed, which can be used as a counterweight and can also prevent impurities from damaging the filter screen. The strap is connected to the slot on the membrane shell with a buckle, and the device can be tied to the thigh or other parts to achieve one-handed operation.

[0017] Therefore, the present invention has the following beneficial effects:

[0018] (1) The design adds the function of retracting the pressing handle and the membrane shell handle, breaking through the limitation of the handle length on the overall size of the device, thereby reducing the required pressing force. Under the same pressing force, the overall volume of the device can be reduced by more than 25%; and under the same volume of the device, the water inlet pressure can be increased by about 36% after extension. While ensuring the water production, the device can be miniaturized, realizing one-handed operation and improving operational practicality;

[0019] (2) The setting of the outer handle and the membrane shell handle not only realizes the telescopic function, but also protects the handle body and the membrane shell, increases the stability and compactness of the device, has a long service life, and has a beautiful and exquisite appearance;

[0020] (3) Ceramic ball is used as the valve core of the one-way valve, which has better corrosion resistance than metal and rubber materials, thus improving the durability of the device;

[0021] (4) The outer handle adopts a telescopic limit mechanism, the membrane shell handle adopts a round spring sheet, and the rear end cover of the membrane is fixed with a clamp ring. The innovative structural design further reduces the size of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0023] Figure 1 This is an exploded schematic diagram of the overall structure of a portable small-sized seawater desalination device in an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the front and rear extension of the pressing handle assembly and the membrane shell handle of the portable small seawater desalination device in the embodiment of the present application;

[0025] Figure 3 This is a cross-sectional view of a portable small-sized seawater desalination device in an embodiment of the present application;

[0026] Figure 4 This is a cross-sectional view of the telescopic limiting device in the embodiment of the present application;

[0027] Figure 5 This is a cross-sectional view of the filter head in the embodiment of the present application;

[0028] Figure 6 Schematic diagram of the structure of the rear end cover of the membrane in the embodiment of the present application.

[0029] In the figure: 1. high-pressure pump assembly, 1-1. water inlet check valve assembly, 1-2. piston assembly, 1-3. seawater inlet, 1-4. concentrated water outlet, 1-5. reversing valve assembly, 1-6. sealing element, 1-7 check valve, 2. membrane assembly, 2-1. reverse osmosis membrane, 2-2. membrane rear end cover, 2-21. snap ring, 2-22. snap ring positioning hoop, 2-3. membrane shell, 2-4. membrane shell handle, 2-5. fresh water outlet, 2-6. water outlet end cover, 2-7. circular spring sheet, 3. pressing handle assembly, 3-1. inner handle, 3-2. outer handle, 3-3. telescopic limit mechanism, 3-31. marble head, 3-32. spring, 4-1. silicone hose, 4-2. filter head, 4-21. pagoda connector, 4-22. filter element, 4-23. outer cover, 4-3. strap. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are further described below through specific examples.

[0031] In this embodiment, Figure 1 and Figure 3A portable small-sized seawater desalination device is shown, comprising a high-pressure pump assembly 1, a membrane assembly 2, a pressing handle assembly 3 and accessories; the high-pressure pump assembly 1 comprises a water inlet check valve assembly 1-1, a piston assembly 1-2, a seawater inlet 1-3, a concentrated water outlet 1-4, a reversing valve assembly 1-5, a sealing element 1-6 and a check valve 1-7; the pressing handle assembly 3 is bolted to the high-pressure pump mechanism 1; the pressing handle assembly 3 comprises an inner handle 3-1, an outer handle 3-2 and a telescopic limit mechanism 3-3, and the pressing handle assembly 3 A telescopic device is designed, and the handle can be retracted when not in use to reduce the size of the device. The handle can be lengthened when in use to ensure sufficient pressing space and pressing pressure. The membrane assembly 2 includes a reverse osmosis membrane 2-1, a membrane rear end cover 2-2, a membrane shell 2-3, a membrane shell handle 2-4, a fresh water outlet 2-5, a water outlet end cover 2-6 and a circular spring sheet 2-7. The membrane shell handle 2-4 is connected to the membrane shell 2-3 by a card slot. The membrane shell handle 2-4 and the circular spring sheet 2-7 form a telescopic device, which is synchronously extended and retracted with the pressing handle assembly.

[0032] Furthermore, the pressing handle assembly 3 is designed with a telescopic device, which can retract the handle when not in use to reduce the size of the device and facilitate carrying. The handle is lengthened when in use to ensure sufficient pressing space and pressing pressure; the membrane shell handle 2-4 is connected to the membrane shell 2-3 through a card slot, which effectively avoids possible damage to the membrane shell caused by external factors and improves operational practicality;.

[0033] Specifically, the pressing handle assembly 3 and the membrane shell handles 2-4 are telescopically extended through a telescopic device.

[0034] Specifically, the inner handle is divided into two symmetrical parts, which are connected by three pairs of bolts and nuts; the outer handle 3-2 is connected to the inner handle 3-1 through a circular groove and a telescopic limiting mechanism 3-3.

[0035] Specifically, the inner handle 3 - 1 and the outer handle 3 - 2 are sleeved together to achieve relative sliding of the inner and outer handles.

[0036] Specifically, the telescopic limiting mechanism 3-3 utilizes the connection between the marbles on both sides and the inner and outer handles to provide the telescopic device with limits in the contracted state and the extended state.

[0037] Specifically, the membrane shell handle 2-4 is connected to the membrane shell 2-3 by means of a slot, and the circular spring sheet 2-7 provides a limit.

[0038] Specifically, the opening and closing angle of the pressing handle assembly 3 around the axis can reach 60 degrees; when it is about to reach 60 degrees, the contact between the piston and the piston cylinder generates a gradually increasing resistance to remind the user to unload the force.

[0039] Furthermore, the distance between the piston rod and the pressing fulcrum of the pressing handle assembly is K, and the distance between the force midpoint of the handle and the fulcrum is L. Based on the actual use scenario and ergonomics, L is designed. 缩 0.115 mm, L 伸 If the pressure is 0.155 mm, the theoretical pressing force is , and the pressing force can be transmitted to the pressure T on the piston. After the device of the present application is extended, the pressing water pressure increases by about 36%.

[0040] Specifically, the seawater inlet and the concentrated water outlet are in the same straight line and perpendicular to the outer side of the pump casing.

[0041] In some embodiments, Figure 2 A schematic diagram of the front and rear extension of the push handle assembly 3 and the membrane shell handles 2-4 of a portable small seawater desalination device is shown. The length of the device can be shortened to 115 mm, thereby realizing the miniaturization of the portable small seawater desalination device.

[0042] In some embodiments, Figure 4 A cross-sectional view of the telescopic limit device is shown, in which the outer handle 3-2 is connected to the inner handle 3-1 through a circular groove and a telescopic limit mechanism 3-3.

[0043] In some embodiments, Figure 5 A cross-sectional view of the filter head is shown, and the filter head 4-2 includes a pagoda joint 4-21, a filter element 4-22 and an outer cover 4-23; the filter screen of the filter element 4-22 adopts a 200-mesh nylon filter screen; a nylon outer cover 4-23 is added to the outside of the filter element 4-22 as a counterweight, which can also prevent impurities from damaging the filter screen.

[0044] According to the above embodiment, the working process of the portable small seawater desalination device of the present application is as follows:.

[0045] Before starting work, press the marbles on both sides of the handle to release the limit and extend the handle to the maximum length; when working, hold the two handles tightly with both hands or use the straps to fix the membrane shell handles and operate the pressing handle assembly 3 with one hand. When the pressing handle assembly 3 is lifted, the piston rod is pulled forward, and negative pressure is formed in the cavity, and seawater is drawn through the water intake coarse filter head 4-2, the silicone hose 4-1, and the water inlet check valve assembly 1-1 until it reaches the piston cavity. When the pressing handle assembly 3 is pressed down, the piston rod moves backward, closing the water inlet check valve assembly 1-1 and pushing the seawater into the membrane assembly 2.

[0046] When the seawater fills the reverse osmosis membrane assembly 2, the handle assembly 3 is pressed down again, the piston rod moves backward, and a part of the treated concentrated water returns to the piston chamber through the reversing valve assembly 1-5, which improves the utilization rate of seawater and can also assist the pushing of the piston rod and reduce the required operating pressure. The fresh water produced after the reverse osmosis treatment directly passes through the water production interface and the fresh water pipe as qualified fresh water for drinking. Finally, the concentrated seawater after multiple reverse osmosis is collected and discharged through the concentrated water pipe next to the reversing valve, completing the desalination process.

[0047] The device design can recycle concentrated water for multiple reverse osmosis, which can achieve a constant recovery rate. Regardless of how the TDS of the influent changes, it can guarantee a fixed recovery rate and ensure a good water production volume and quality. At the same time, the device can also convert the pressure of the recovered concentrated water into the inlet pressure, reduce the operating pressure, realize energy recycling, provide convenience to users, and realize the design requirements of the manually driven seawater desalination device. And the filtration and purification effect is good. The reverse osmosis membrane used is a dense organic membrane that only allows water molecules to pass through, while preventing the salt ions in the water from passing through, and the desalination rate can reach more than 98%. At the same time, reverse osmosis can effectively remove impurities such as inorganic salts, suspended matter, organic matter, colloids, bacteria, viruses, etc., which greatly improves the quality of the effluent water and meets the standards of drinking water.

[0048] If disassembly is required, first switch the push handle assembly of the valve device for maintenance and update, first pull the handle out to the working position, press the marble head to remove the telescopic limit mechanism, unscrew the limit screw to pull out the outer handle, and finally remove the three pairs of fixing bolts and nuts of the inner handle. After the maintenance and update is completed, install the parts in the reverse order of disassembly.

[0049] When the reverse osmosis membrane of the device needs to be replaced, first remove the clamp ring 2-21 and the membrane rear end cover 2-2, then knock the water outlet end cover 2-6, push the reverse osmosis membrane, the water outlet end cover 2-6 and the fresh water outlet 2-5 backward out of the membrane shell 2-3, and finally separate the reverse osmosis membrane and other components and replace them. After the replacement is completed, the components can be returned to the original path for installation.

[0050] The above embodiments are only used to further illustrate that the present invention is a portable small-sized seawater desalination device, but the present invention is not limited to the embodiments. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A portable small seawater desalination device, characterized in that: The device comprises: a high-pressure pump assembly (1), a membrane assembly (2), a pressing handle assembly (3) and accessories; The high-pressure pump assembly (1) comprises a water inlet check valve assembly (1-1), a piston assembly (1-2), a seawater inlet (1-3), a concentrated water outlet (1-4), a reversing valve assembly (1-5), a sealing element (1-6) and a check valve (1-7); The pressing handle assembly (3) is bolted to the high-pressure pump mechanism (1); The pressing handle assembly (3) comprises an inner handle (3-1), an outer handle (3-2) and a telescopic limit mechanism (3-3). The pressing handle assembly (3) is designed with a telescopic device, which can retract the handle when not in use to reduce the size of the device, and lengthen the handle when in use to ensure sufficient pressing space and pressing pressure. The membrane assembly (2) comprises a reverse osmosis membrane (2-1), a membrane rear end cover (2-2), a membrane shell (2-3), a membrane shell handle (2-4), a fresh water outlet (2-5), a water outlet end cover (2-6) and a circular spring sheet (2-7); the membrane shell handle (2-4) is connected to the membrane shell (2-3) by means of a card slot; the membrane shell handle (2-4) and the circular spring sheet (2-7) form a telescopic device, which is telescopically extended and retracted synchronously with the pressing handle assembly; The accessories include a silicone hose (4-1), a filter head (4-2) and a binding belt (4-3).

2. A portable small seawater desalination device according to claim 1, characterized in that: The inner handle (3-1) consists of two symmetrical parts connected by bolts and nuts; the outer handle (3-2) is connected to the inner handle (3-1) by a circular groove and a telescopic limiting mechanism (3-3).

3. A portable small seawater desalination device according to claim 1, characterized in that: The piston rod of the piston assembly (1-2) uses a sealing element (1-6) to maintain the sealing performance of the high-pressure pump assembly (1).

4. A portable small seawater desalination device according to claim 1, characterized in that: The valve core of the one-way valve (1-7) adopts a ceramic ball.

5. A portable small seawater desalination device according to claim 2, characterized in that: The inner handle (3-1) and the outer handle (3-2) are sleeved together to achieve relative sliding of the inner and outer handles.

6. A portable small seawater desalination device according to claim 1, characterized in that: The reverse osmosis membrane (2-1) is fixedly connected to the membrane rear end cover (2-2) and the water outlet end cover (2-6) respectively; the membrane rear end cover (2-2) is fixed by a clamping ring (2-21) and a clamping ring positioning hoop (2-22); the membrane shell handle (2-4) realizes a telescopic function by relative movement with the membrane shell (2-3), and is limited by a circular spring sheet (2-7).

7. A portable small seawater desalination device according to claim 1, characterized in that: A fixing clamp is provided at the connection between the membrane assembly (2) and the high-pressure pump assembly (1), and a corresponding fixing slot is provided on the high-pressure pump assembly (1); the membrane assembly (2) and the high-pressure pump assembly (1) are fixedly connected by screws.

8. The portable small seawater desalination device according to claim 1, characterized in that: The filter head (4-2) comprises a pagoda joint (4-21), a filter element (4-22) and an outer cover (4-23); the filter screen of the filter element (4-22) adopts a 200-mesh nylon filter screen; a nylon outer cover (4-23) is installed outside the filter element (4-22) as a counterweight, which can also prevent impurities from damaging the filter screen; the strap (4-3) is connected to the slot on the membrane shell by a buckle, so that the seawater desalination device can be tied to the thigh, and the seawater desalination operation can be performed with one hand.

9. A portable small seawater desalination device according to claim 1, characterized in that: The handle assembly (3) can be opened and closed around the axis within a range of 0-60 degrees.

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